public IQueryHandlerCollection Add <TQuery, TResult>(IQueryHandler <TQuery, TResult> handler)
where TQuery : IQuery <TResult>
{
Ensure.NotNull(handler, "handler");
storage[typeof(TQuery)] = new DefaultQueryHandlerDefinition <TQuery, TResult>(handler);
return(this);
}
public IQueryHandlerCollection Add <TQuery, TOutput>(IQueryHandler <TQuery, TOutput> handler)
where TQuery : IQuery <TOutput>
{
Ensure.NotNull(handler, "handler");
DefaultQueryHandlerDefinition <TOutput> definition = new DefaultQueryHandlerDefinition <TOutput>(handler, query => handler.HandleAsync((TQuery)query));
storage[typeof(TQuery)] = definition;
return(this);
}
public Task <TOutput> QueryAsync <TOutput>(IQuery <TOutput> query)
{
Ensure.NotNull(query, "query");
DefaultQueryHandlerDefinition definition;
Type queryType = query.GetType();
if (storage.TryGetValue(queryType, out definition))
{
DefaultQueryHandlerDefinition <TOutput> target = (DefaultQueryHandlerDefinition <TOutput>)definition;
return(target.HandleAsync(query));
}
throw Ensure.Exception.ArgumentOutOfRange("query", "There isn't query handler for query of type '{0}'.", queryType.FullName);
}
